会展业中互动投影系统的研究与应用

受益于科技的进步,会展行业正向着多元化、智能化的方向发展,基于人机交互技术的多媒体互动投影系统在会展行业得到广泛应用。互动投影系统以人机交互技术为基础,结合计算机视觉技术和多媒体投影显示技术,在虚拟的环境中创造一种奇幻的动态交互体验,带来一种身临其境的感觉,给人们的生活和工作带来极大便利。     

NUMERICAL STUDY ON THE UNSTEADY INTERACTION FLOW IN A CENTRIFUGAL COMPRESSOR STAGE

Numerical simulation on the unsteady flow in a centrifugal compressor is performed, and compared with the experimental data. The influence of the impeller-diffuser interaction on the flow-fields is discussed, and the reasons for the losses are also explored. Results show that qualitative and quite fair quantitative agreements are achieved between the predicted and measured flowfields. The influence of the impeller wake on the convexity surface of diffuser is great. The potential repercussion of the diffuser on the suction surface of the impeller is much larger than on the pressure surface. Effect of the unsteady interaction is strongest in the radial gap. The unsteady flow itself may compensate for the loss generated in stage, and the stage efficiency is inversely proportional to the entropy production.     

基于Virtools的交互式机械手运动仿真设计与实现

基于虚拟现实技术,以Virtools为开发工具,设计与实现了一种可以在网络环境中交互式操作的三维机械手运动仿真系统。该实现方法具有较好的可拓展性和普遍性,能够广泛应用于基于Virtools开发的各种机构的运动仿真。     

The variation of lateral forces as a function of alignment for a cylindrical wheel rolling on a rail

Those lateral forces that arise between a steel wheel and a rail as a consequence of misalignment are analysed. The magnitude of these forces is calculated for unconed wheels as a function of the misalignment angle and the friction coefficient. The results show that by following an FEM standard (an alignment better than 1:2500) lateral forces should be less than μP/4 where μ is the interfacial friction coefficient and P is the normal load.     

CIMS环境下MRP—Ⅱ主生产计划系统的研究与开发

介绍了制造资源计划（ＭＲＰ－Ⅱ）主生产计划系统的总体结构和开发策略，用人机交互方式可以非常方便地制定主生产计划。     

STUDY ON TESTING TECHNIQUE FOR MEASUREMENT OF FATIGUE－CREEP INTERACTION RESISTANCE

ＳＴＵＤＹＯＮＴＥＳＴＩＮＧＴＥＣＨＮＩＱＵＥＦＯＲＭＥＡＳＵＲＥＭＥＮＴＯＦＦＡＴＩＧＵＥ－ＣＲＥＥＰＩＮＴＥＲＡＣＴＩＯＮＲＥＳＩＳＴＡＮＣＥＳＴＵＤＹＯＮＴＥＳＴＩＮＧＴＥＣＨＮＩＱＵＥＦＯＲＭＥＡＳＵＲＥＭＥＮＴＯＦＦＡＴＩＧＵＥ－ＣＲＥＥＰ...     

高速泵内三维非定常动静干扰流动计算

利用三维Navier-Stokes方程和RNG湍流模型,并在转动部件与静止部件间采用滑移网格技术建立交互界面,对高速泵内多级动静干扰引起的三维非定常湍流进行了计算,得到了旋转叶轮与固定导叶间的流体的紊流特征。     

Force sensing in scanning tunnelling microscopy: observation of adhesion forces on clean metal surfaces

Tip sample interaction forces were investigated during normal tunnelling operation of the STM using an Ir tip and a polycrystalline Ir sample. Metallic adhesion interaction was observed for tunnel conductivity ranging from 10^?6 to 19^{?9 Ω-1} implying that the actual gap width was of the order of 1–4 Å. Similar experiments performed on a polycrystalline Al sample exposed to 1 Langmuir O₂ showed that tip sample interaction changed from attractive to repulsive on well-defined areas extending over ～100 Ų which we identified with the oxidized Al surface.     

Quantum theoretical approach to a near-field optical system

The paper proposes a quantum theoretical formulation of an optical near-field system based on the projection-operator method. Special attention is paid to a nanometric probe tip–quantum mechanical sample system, whose interactions are essential for describing such phenomena as atom guidance and manipulation, or local excitation of a single quantum dot. The relationship to the virtual photon model − an intuitive model − is discussed, and the latter's empirical assumption of the Yukawa-type interaction between probe and sample is justified theoretically. Several applications of the theory are briefly outlined.     

基于遥操作的视频增强现实系统的研究

从分析遥操作的人机交互手段入手，研究了基于遥操作的增强现实系统的单元基本结构和功能，提出了基于遥操作机械手的视频增强现实系统的软件框架和实现方法，并应用到遥操作空间机械手的模拟实验中，完成了模拟机械手抓取的作业任务，验证了其实用性。     

光学蛋白质芯片技术及其应用

本文介绍一种新型光学蛋白质芯片技术和在生物医学领域的应用。通过固体基底表面的微格式化,表面改性和生物配基固定等技术,制备多元生物活性感应表面;利用生物分子操作,蛋白质的特异结合性和高分辨率的生物光学椭偏显策成像技术,达到识别,检测和纯化蛋白的目的,它是一种非标记的多元蛋白质定量分析方法,并且能够对蛋白质之间的相互作用过程进行实时测量,获得反应速率及反应条件等生物分子反应的动力学参数。     

跨音速翼型的抖振特性研究

采用二元非定常Ｎ－Ｓ方程为控制方程,计算跨音速翼型升力系数和力矩系数的 时间历程。根据气动力系数的脉动量急剧上升的起始点确定抖振起始边界。气动力 系数脉动量的大小可用来表示抖振强度。以ＮＡＣＡ００１２翼型为算例,计算结果和风 洞实验结果以及其它计算方法的计算结果相比较,一致性很好。     

感应回火机床多参数控制系统的设计

对主齿立式感应回火机床多参数控制系统进行了设计,回火机床采用西门子808D数控系统,数控加工程序、能量监控系统工艺参数与远程调度信号之间的交互是通过西门子S7-1200 PLC,用PROFINET总线把它们连接起来。经现场运行,整个系统工作正常,能够满足生产需要。     

数字化展示设计中虚拟交互的应用与研究

数字化展示设计中虚拟交互是展示设计中的关键技术,该技术的发展推动了产品的智能化、自动化、人性化.数字化展示方式丰富,在改变主题的情况下具有可循环利用的特点,其媒介即为虚拟交互技术.虚拟技术具有安全性能高、逼真度高、开发周期短、市场竞争力强等特点,实际运用中能提高工作效率并节约成本.     

基于Kinect骨骼追踪的控制方法的研究

提出了一种基于Kinect骨骼追踪的控制方法,提高了人机交互的效率性和自然性。Kinect有红外发射器和摄像头,所以其能够产生三维数据。Kinect SDK从红外摄像头获取红外数据后,对其进行计算处理,产生景深数据,通过骨骼追踪技术处理景深数据,以匹配人体的各个部分,进而建立人体各个关节的3D坐标;然后利用3D坐标值计算各个关节的转动角度;最后将计算结果发送给被控对象,完成了整个控制过程。此控制方法很好地实现了体感交互,可应用于智能家居、智能教学、工业控制等领域。     

制造企业信息标准化计算机辅助管理支持系统研究

针对棉纺制造企业信息化工程建设中的异构信息交互和集成的需求,建立一种棉纺制造企业信息标准化计算机辅助管理支持系统的体系结构和功能模型,研究了棉纺制造企业信息编码模型、信息编码集成技术和动态编码实现技术等关键技术,开发了一套实用系统,并在重庆某棉纺制造企业中成功实施和应用,取得了较好应用效果。     

基于流—固耦合的汽车减振器动态特性仿真分析

对减振器的流—固耦合建模和求解技术进行研究。基于多求解器的流—固耦合方法,建立精度较高的阻尼阀流场网格模型和叠加阀片有限元接触模型,并联合有限体积法和有限元法对减振器流—固耦合模型进行求解和分析,获取了减振器的速度特性和示功图,对阻尼阀内部压力场、速度场进行详细分析,对叠加阀片非线性动力学特性进行分析。仿真结果表明:由于高速油液对阻尼阀壁面的冲击作用,阻尼阀核心区域的压力场急剧变化;阀片在开启和关闭瞬间,速度有一个跳跃,这使得节流通道迅速变化,具体表现为开阀点附近的速度特性曲线向下弯折。因此,阻尼阀核心区域的流场网格模型和叠加阀片的接触模型对仿真精度影响最大。计算中考虑了油液的湍流流动,阀片的接触滑移和大挠度变形,使得流—固耦合模型尽可能地贴近物理事实,仿真结果与试验吻合较好。     

Excitation dynamics in a three-quantum dot system driven by optical near-field interaction: towards a nanometric photonic device

Using density operator formalism, we discuss interdot excitation energy transfer dynamics driven by the optical near‐field and phonon bath reservoir, as well as coherent excitation dynamics of a quantum dot system. As an effective interaction between quantum dots induced by the optical near‐field, the projection operator method gives a renormalized dipole interaction, which is expressed as a sum of the Yukawa functions and is used as the optical near‐field coupling of quantum dots. We examine one‐ and two‐exciton dynamics of a three‐quantum dot system suggesting a nanometric photonic switch, and numerically obtain a transfer time comparable with the recent experimental results for CuCl quantum dots.     

Development of a Musical-based Interaction System for the Waseda Flutist Robot-Implementation of a Real-time Vision Interface Based on the Particle Filter Algorithm

-The aim of this paper is to create an interface for robot interaction.Specifically,musical performance parameters (i.e.vibrato expression) of the Waseda Flutist Robot No.4 Refined Ⅳ (WF-4RIV) are to be manipulated.This research focused on enabling the WF-4RIV to interact with human players (musicians) in a natural way.In this paper,as the first approach,a vision processing algorithm,which is able to track the 3D-orientation and position of a musical instrument,was developed.In particular,the robot acquires image data through two cameras attached to its head.Using color histogram matching and a particle filter,the position of the musician's hands on the instrument are tracked.Analysis of this data determines orientation and location of the instrument.These parameters are mapped to manipulate the musical expression of the WF4RIV,more specifically sound vibrato and volume values.The authors present preliminary experiments to determine if the robot may dynamically change musical paramenters while interacting with a human player (i.e.vibrato etc.).From the experimental results,they may confirm the feasibility of the interaction during the performance,although further research must be carried out to consider the physical constraints of the flutist robot.     

论高等学校与企业互动式人才培养模式

我国企业的人才需求模式已经发生了显著变化,而我国高等学校在传统模式下培养人才仍然主要以学校内部的评价尺度作为标准,两者不能直接对接。应当通过构建以人才供需信息交流、人力资源流动、人才评价三大机制为基础的高等学校与企业互动式人才培养模式来解决这一问题。